A telecommunications system according to an embodiment of the present invention includes a wireless device (30-150) including a positioning controller (504) and a communications controller (502); and an administrative device (30-152) for receiving alerts from said wireless communication device via said...http://www.google.fr/patents/US7224966?utm_source=gb-gplus-shareBrevet US7224966 - System and method for web-based presence perimeter rule monitoring
System and method for web-based presence perimeter rule monitoring
